memory order

Baidu Geek Talk

Apr 21, 2021 · Backend Development

Performance Optimization in Baidu's C++ Backend: Memory Allocation and Access Techniques

Baidu engineers boost C++ backend latency and cost efficiency by eliminating unnecessary string zero‑initialization, using zero‑copy split with SIMD, replacing deep protobuf merges with repeated string fields, employing job‑scoped arenas and custom memory resources for allocation, and applying prefetching, cache‑line awareness, and tuned memory‑order semantics, achieving multiplicative to order‑of‑magnitude speedups.